chore(migration): Migrate code from googleapis/google-auth-library-python-httplib2 into packages/google-auth-httplib2

packages/google-auth-httplib2/.coveragerc

@@ -0,0 +1,13 @@
+[run]
+branch = True
+
+[report]
+omit =
+    */conftest.py
+exclude_lines =
+    # Re-enable the standard pragma
+    pragma: NO COVER
+    # Ignore debug-only repr
+    def __repr__
+    # Don't complain if tests don't hit defensive assertion code:
+    raise NotImplementedError

packages/google-auth-httplib2/.flake8

@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright 2024 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Generated by synthtool. DO NOT EDIT!
+[flake8]
+ignore = E203, E231, E266, E501, W503
+exclude =
+  # Exclude generated code.
+  **/proto/**
+  **/gapic/**
+  **/services/**
+  **/types/**
+  *_pb2.py
+
+  # Standard linting exemptions.
+  **/.nox/**
+  __pycache__,
+  .git,
+  *.pyc,
+  conf.py

packages/google-auth-httplib2/.github/CODEOWNERS

@@ -0,0 +1,12 @@
+# Code owners file.
+# This file controls who is tagged for review for any given pull request.
+#
+# For syntax help see:
+# https://help.github.com/en/github/creating-cloning-and-archiving-repositories/about-code-owners#codeowners-syntax
+# Note: This file is autogenerated. To make changes to the codeowner team, please update .repo-metadata.json.
+
+# @googleapis/yoshi-python @googleapis/googleapis-auth are the default owners for changes in this repo
+*     @googleapis/yoshi-python @googleapis/googleapis-auth
+
+# @googleapis/python-samples-reviewers @googleapis/googleapis-auth are the default owners for samples changes
+/samples/   @googleapis/python-samples-reviewers @googleapis/googleapis-auth

packages/google-auth-httplib2/.github/CONTRIBUTING.md

@@ -0,0 +1,28 @@
+# How to Contribute
+
+We'd love to accept your patches and contributions to this project. There are
+just a few small guidelines you need to follow.
+
+## Contributor License Agreement
+
+Contributions to this project must be accompanied by a Contributor License
+Agreement. You (or your employer) retain the copyright to your contribution;
+this simply gives us permission to use and redistribute your contributions as
+part of the project. Head over to <https://cla.developers.google.com/> to see
+your current agreements on file or to sign a new one.
+
+You generally only need to submit a CLA once, so if you've already submitted one
+(even if it was for a different project), you probably don't need to do it
+again.
+
+## Code reviews
+
+All submissions, including submissions by project members, require review. We
+use GitHub pull requests for this purpose. Consult
+[GitHub Help](https://help.github.com/articles/about-pull-requests/) for more
+information on using pull requests.
+
+## Community Guidelines
+
+This project follows [Google's Open Source Community
+Guidelines](https://opensource.google.com/conduct/).

packages/google-auth-httplib2/.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,43 @@
+---
+name: Bug report
+about: Create a report to help us improve
+
+---
+
+Thanks for stopping by to let us know something could be better!
+
+**PLEASE READ**: If you have a support contract with Google, please create an issue in the [support console](https://cloud.google.com/support/) instead of filing on GitHub. This will ensure a timely response.
+
+Please run down the following list and make sure you've tried the usual "quick fixes":
+
+  - Search the issues already opened: https://github.com/googleapis/google-auth-library-python-httplib2/issues
+  - Search StackOverflow: https://stackoverflow.com/questions/tagged/google-cloud-platform+python
+
+If you are still having issues, please be sure to include as much information as possible:
+
+#### Environment details
+
+  - OS type and version:
+  - Python version: `python --version`
+  - pip version: `pip --version`
+  - `google-auth-httplib2` version: `pip show google-auth-httplib2`
+
+#### Steps to reproduce
+
+  1. ?
+  2. ?
+
+#### Code example
+
+```python
+# example
+```
+
+#### Stack trace
+```
+# example
+```
+
+Making sure to follow these steps will guarantee the quickest resolution possible.
+
+Thanks!

packages/google-auth-httplib2/.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,18 @@
+---
+name: Feature request
+about: Suggest an idea for this library
+
+---
+
+Thanks for stopping by to let us know something could be better!
+
+**PLEASE READ**: If you have a support contract with Google, please create an issue in the [support console](https://cloud.google.com/support/) instead of filing on GitHub. This will ensure a timely response.
+
+ **Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+ **Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+ **Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+ **Additional context**
+Add any other context or screenshots about the feature request here.

packages/google-auth-httplib2/.github/ISSUE_TEMPLATE/support_request.md

@@ -0,0 +1,7 @@
+---
+name: Support request
+about: If you have a support contract with Google, please create an issue in the Google Cloud Support console.
+
+---
+
+**PLEASE READ**: If you have a support contract with Google, please create an issue in the [support console](https://cloud.google.com/support/) instead of filing on GitHub. This will ensure a timely response.

packages/google-auth-httplib2/.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,7 @@
+Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:
+- [ ] Make sure to open an issue as a [bug/issue](https://github.com/googleapis/google-auth-library-python-httplib2/issues/new/choose) before writing your code!  That way we can discuss the change, evaluate designs, and agree on the general idea
+- [ ] Ensure the tests and linter pass
+- [ ] Code coverage does not decrease (if any source code was changed)
+- [ ] Appropriate docs were updated (if necessary)
+
+Fixes #<issue_number_goes_here> 🦕

packages/google-auth-httplib2/.github/auto-label.yaml

@@ -0,0 +1,20 @@
+# Copyright 2024 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+requestsize:
+  enabled: true
+
+path:
+  pullrequest: true
+  paths:
+    samples: "samples"

packages/google-auth-httplib2/.github/blunderbuss.yml

@@ -0,0 +1,17 @@
+# Blunderbuss config
+#
+# This file controls who is assigned for pull requests and issues.
+# Note: This file is autogenerated. To make changes to the assignee
+# team, please update `codeowner_team` in `.repo-metadata.json`.
+assign_issues:
+  - googleapis/googleapis-auth
+
+assign_issues_by:
+  - labels:
+      - "samples"
+    to:
+      - googleapis/python-samples-reviewers
+      - googleapis/googleapis-auth
+
+assign_prs:
+  - googleapis/googleapis-auth

packages/google-auth-httplib2/.github/header-checker-lint.yml

@@ -0,0 +1,15 @@
+{"allowedCopyrightHolders": ["Google LLC"],
+ "allowedLicenses": ["Apache-2.0", "MIT", "BSD-3"],
+ "ignoreFiles": ["**/requirements.txt", "**/requirements-test.txt", "**/__init__.py", "samples/**/constraints.txt", "samples/**/constraints-test.txt"],
+ "sourceFileExtensions": [
+ 	"ts", 
+ 	"js", 
+ 	"java", 
+ 	"sh", 
+ 	"Dockerfile", 
+ 	"yaml", 
+ 	"py",
+ 	"html",
+ 	"txt"
+ ]
+}

packages/google-auth-httplib2/.github/workflows/unittest.yml

@@ -0,0 +1,61 @@
+on:
+  pull_request:
+    branches:
+      - main
+name: unittest
+jobs:
+  unit:
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2303): use `ubuntu-latest` once this bug is fixed.
+    # Use ubuntu-22.04 until Python 3.7 is removed from the test matrix
+    # https://docs.github.com/en/actions/using-github-hosted-runners/using-github-hosted-runners/about-github-hosted-runners#standard-github-hosted-runners-for-public-repositories
+    runs-on: ubuntu-22.04
+    strategy:
+      matrix:
+        python: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Setup Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python }}
+    - name: Install nox
+      run: |
+        python -m pip install --upgrade setuptools pip wheel
+        python -m pip install nox
+    - name: Run unit tests
+      env:
+        COVERAGE_FILE: .coverage-${{ matrix.python }}
+      run: |
+        nox -s unit-${{ matrix.python }}
+    - name: Upload coverage results
+      uses: actions/upload-artifact@v4
+      with:
+        name: coverage-artifact-${{ matrix.python }}
+        path: .coverage-${{ matrix.python }}
+        include-hidden-files: true
+
+  cover:
+    runs-on: ubuntu-latest
+    needs:
+        - unit
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Setup Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: "3.8"
+    - name: Install coverage
+      run: |
+        python -m pip install --upgrade setuptools pip wheel
+        python -m pip install coverage
+    - name: Download coverage results
+      uses: actions/download-artifact@v4
+      with:
+        path: .coverage-results/
+    - name: Report coverage results
+      run: |
+        find .coverage-results -type f -name '*.zip' -exec unzip {} \;
+        coverage combine .coverage-results/**/.coverage*
+        coverage report --show-missing --fail-under=99

packages/google-auth-httplib2/.gitignore

@@ -0,0 +1,40 @@
+# Build artifacts
+*.py[cod]
+__pycache__
+*.egg-info/
+build/
+dist/
+
+# Documentation-related
+docs/_build
+
+# Test files
+.nox/
+.tox/
+.cache/
+
+# Django test database
+db.sqlite3
+
+# Coverage files
+.coverage
+coverage.xml
+nosetests.xml
+htmlcov/
+
+# Files with private / local data
+scripts/local_test_setup
+tests/data/key.json
+tests/data/key.p12
+tests/data/user-key.json
+
+# PyCharm configuration:
+.idea
+
+# Generated files
+pylintrc
+pylintrc.test
+
+# Test logs
+coverage.xml
+*sponge_log.xml

packages/google-auth-httplib2/.kokoro/build.sh

@@ -0,0 +1,60 @@
+#!/bin/bash
+# Copyright 2024 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -eo pipefail
+
+CURRENT_DIR=$(dirname "${BASH_SOURCE[0]}")
+
+if [[ -z "${PROJECT_ROOT:-}" ]]; then
+  PROJECT_ROOT=$(realpath "${CURRENT_DIR}/..")
+fi
+
+pushd "${PROJECT_ROOT}"
+
+# Disable buffering, so that the logs stream through.
+export PYTHONUNBUFFERED=1
+
+# Debug: show build environment
+env | grep KOKORO
+
+# Setup service account credentials.
+if [[ -f "${KOKORO_GFILE_DIR}/service-account.json" ]]
+then
+  export GOOGLE_APPLICATION_CREDENTIALS=${KOKORO_GFILE_DIR}/service-account.json
+fi
+
+# Setup project id.
+if [[ -f "${KOKORO_GFILE_DIR}/project-id.json" ]]
+then
+  export PROJECT_ID=$(cat "${KOKORO_GFILE_DIR}/project-id.json")
+fi
+
+# If this is a continuous build, send the test log to the FlakyBot.
+# See https://github.com/googleapis/repo-automation-bots/tree/main/packages/flakybot.
+if [[ $KOKORO_BUILD_ARTIFACTS_SUBDIR = *"continuous"* ]]; then
+  cleanup() {
+    chmod +x $KOKORO_GFILE_DIR/linux_amd64/flakybot
+    $KOKORO_GFILE_DIR/linux_amd64/flakybot
+  }
+  trap cleanup EXIT HUP
+fi
+
+# If NOX_SESSION is set, it only runs the specified session,
+# otherwise run all the sessions.
+if [[ -n "${NOX_SESSION:-}" ]]; then
+  python3 -m nox -s ${NOX_SESSION:-}
+else
+  python3 -m nox
+fi